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The MathML <mrow> element is used to group sub-expressions, which usually contain one or more operators with their respective operands (such as <mi> and <mn>). This element renders as a horizontal row containing its arguments.

When writing a MathML expression, you should group elements within an <mrow> in the same way as they are grouped in the mathematical interpretation of the expression. Proper grouping helps the rendering of the expression in several ways:

  • It can improve the display by possibly affecting spacing.
  • It allows for more intelligent line-breaking and indentation.
  • It simplifies the interpretation of the expression by automated systems such as computer algebra systems and audio renderers.

Attributes

class, id, style
Provided for use with stylesheets.
dir
Overall directionality of formulas. Possible values are either ltr (left to right) or rtl (right to left).
href
Used to set a hyperlink to a specified URI.
mathbackground
The background color. You can use #rgb, #rrggbb and HTML color names.
mathcolor
The text color. You can use #rgb, #rrggbb and HTML color names.

Examples

<math> 

  <mrow>
    <mn> 1 </mn>
    <mo> + </mo>
    <mn> 1 </mn>
  </mrow>
 
  <mrow>
    <mo> ( </mo>
    <mrow>
      <mi> x </mi>
      <mo> , </mo>
      <mi> y </mi>
    </mrow>
    <mo> ) </mo>
  </mrow>

</math>

Specifications

Specification Status Comment
MathML 3.0
The definition of 'mrow' in that specification.
Recommendation Current specification
MathML 2.0
The definition of 'mrow' in that specification.
Recommendation Initial specification

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support 1.0 (1.7 or earlier) No support No support 5.1
dir No support 12.0 (12.0) No support No support No support
href No support 7.0 (7.0) No support No support 10.0 WebKit bug 85733
mathbackground No support 4.0 (2.0) No support No support 5.1
mathcolor No support 4.0 (2.0) No support No support 5.1
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support 1.0 (1.0) No support No support No support
dir No support No support 12.0 (12.0) No support No support No support
href No support No support 7.0 (7.0) No support No support No support
mathbackground No support No support 4.0 (2.0) No support No support No support
mathcolor No support No support 4.0 (2.0) No support No support No support

See also

  • Grouping HTML elements: <div>

Étiquettes et contributeurs liés au document

 Contributeurs à cette page : Yaffle, fscholz, Sheppy, fred.wang, jswisher
 Dernière mise à jour par : Yaffle,